Automatic air-brake applier.



O. E. HALL.

AUTOMATIC AIR BRAKE APPLIER.

APPLICATION FILED AUG. 12, 1913.

Patented Dec. 16, 1913.

" tion, and will be 'sive parts that will not easily get out of or-- vide a mechanism 15' UNITED STATES PATENT OFFICE.

CHARLES E. HALL, OF CHILDRESS, TEXAS.

AUTOMATIC AIR-BRAKE APPLIER.

Specification of Letters Patent.

Patented Dec. 16, 1913.

through the arm and positioned to bear upon the top edge of the sleeve whereby to l1m1t gravitating movement of the arm.

Application filed August 12, 1913. Serial No. 784,413. To all whom it may concern Be it known 1: at I, Crmnnas HALL, a citizen of the United States, residing at hildress, in the county of Childress, State.

of; Texas, have invented certain new and useful Improvements in Automatic Air- Brake Appliers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use thesame.

This invention relates to automatic air brake appliers and has for an object to profor automatically releasing the air in the train pipe with a resultant application of the brakes upon a car'wheel leaving the tracks.

A. further obiect is to-provide a device of this character that will be extremely simple in construction, will be eiiectivein operait'ormed of a few inexpen- With the above objects in view the invention consists of certain novel details of construction and combination of parts hereinafter fully described and claimed, it being understood that various modifications may be made in the minor details of construction within the scope of the appended claim.

In the accompanying drawing illustrating this invention: Figure l is a fragmentary side elevation of a car truck showing the application of my invention. Fig. 2 is a plan view of the parts shown in Fig. 1. Fig. 3 is a fragmentary view in elevation Showing the normal position of the parts. Fig. 4 is a side elevation showing the operative position of the parts.

Referring now to the drawing in which like characters of reference designate similar parts, 10 designates a conventional car truck, and 11 the train pipe.

In carrying out my invention I provide a branch pipe 12 from the train pipe, the

; branch pipe being equipped at the end with an angle cook 13 that has its stem equipped with a crank 14. The invention further includes a sleeve 15 that is secured to the truck bolster 16, and slidably fitted in this sleeve is an upright arm 17 that carries a shoe 18 at its lower end and carries at the upper end a head 19 having an arcuate slot 20 therein which receives the crank of the angle cock. There is a stop pin 21 engaged copies of this patent may be obtained for In the normal position of the parts, the angle cock is closed and its crank extends horizontally and is engaged with the inner end of the arcuate slot 20. Upon the adja cent wheel of the truck leaving the track, there will be adrop of from five to nine inches, causing the shoe 18 which normally stands about or less above the top of the rail, to come into contact with the rail, with a resultant lifting of the arm 17 from the position shown in Fig. 3 to the position shown in Fig. 4 whereby the angle cock crank is lifted by the slot from a horizontal to a vertical position with a resultant opening of the angle cock and release of the air from the train pipe whereby the brakes are applied.

The device above described is placed on opposite corners of the car in order that an application of the brakes may be had in case either end of the car should be derailed, and regardless of the direction in which the car is traveling or the side of the rail which the wheel leaves.

From the above description it will be seen that I have provided an extremely simple and efi'ective mechanism for automatically applying the brakes upon a car truck leaving the track, and further that such mechanism is formed of a few inexpensive parts that are strong and durable and will not easily get out of order.

hat is claimed, is

An automatic air brake applier including the combination with a train pipe and car truck, of an angle cock connected to said train pipe, an arm slidably attached to said truck and equipped with a shoe normally held raised from the rail, a head onsaid arm provided with an arcuate slot, anda crank on the angle cock stem engaging in said slot, said shoe striking said rail upon derailment of the truck with a resultant lifting of said arm and actuation of said crank by said slot to open said angle cock and release the air in said train pipe to apply the brakes.

In testimony whereof, I aflix my signer ture, in the presence of two witnesses.

CHARLES E; HALL. Witnesses W. L. MoCLnLLoN, M. L. REULBERGER.

five cents each, by addressing the Commissioner of Intent, Washington, I). 0. 

